government of india ministry of railways...2012 58 th esc 28 th & 29 th september 2012 jaipur nwr...
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Compendium of ESC 1935-2014 Page 1
GOVERNMENT OF INDIA
MINISTRY OF RAILWAYS
COMPENDIUM
ON
DELIBERATIONS
OF
ELECTRICAL STANDARDS COMMITTEE
(1935-2014)
ISSUED ON 26-10-2015
BY
ELECTRICAL DIRECTORATE
RESEARCH DESIGNS AND STANDARDS ORGANISATION
MANAK NAGAR, LUCKNOW-226 011
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Compendium of ESC 1935-2014 Page 2
INDEX
S. No. DETAILS PAGE No.
1. FOREWORD 3
2. OBJECTIVE OF ESC 4
3. DELIBERATIONS:1st to 5
th 7-53
4. DELIBERATIONS: 6th
to 10th
54-104
5. DELIBERATIONS:11th
to 15th
105-157
6. DELIBERATIONS:16th
to 20th
158-200
7. DELIBERATIONS:21st to 25
th 201-252
8. DELIBERATIONS:26th
to 30th
253-301
9. DELIBERATIONS:31st to 35
th 302-351
10. DELIBERATIONS:36th
to 40th
352-382
11. DELIBERATIONS:41st to 45
th 383-411
12. DELIBERATIONS:46th
to 50th
412-445
13. DELIBERATIONS:51st to 55
th 446-485
14. DELIBERATIONS:56th
to 59th
486-525
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Compendium of ESC 1935-2014 Page 3
FOREWORD
Electrical Standards Committee (ESC) is a highest forum for Railway Electrical
Engineers to discuss various issues pertaining to Electrical Department for efficient and
economical train operation. This compendium will provide a glimpse of the events and
technological upgradation over last 80 years since inception of this committee.As very old
records were not available easily,efforts have been made to collect as much records for the
ESC, particularly for pre-independence period.
Initially separate ESC meetings used to be held for General Services and Traction.
From 49th
ESC onward, which was held in January’1999 at Pune, a decision was taken to
convene a common ESC meeting for all items of Electrical department.
This compendium will be updated regularly so that all the records are available at
one place. Moreover, a copy of this compendium is also available on RDSO’s official
website.
(Om Prakash Kesari)
Executive Director Standard Electrical(CO-ORD),
Electrical Directorate, RDSO, Lucknow
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Compendium of ESC 1935-2014 Page 4
OBJECTIVE
OF
ELECTRICAL STANDARDS COMMITTEE
From a humble beginning of electric traction in 1925, today the Electrical Department has
expanded manifold with TL&AC, TRS, EMU/MEMU and TRD as its branches over the
years.
Electrical Standards Committee, the highest forum of Chief Electrical Engineers is
conceived to be a “THINK TANK” for free exchange of ideas so as to evolve strategies for
Electrical Department on Railways to be able to make maximum contribution towards
furthering the corporate objectives of Indian Railways.
The “Role of ESC” as approved by Railway Board vide letter No. 98/Elec(TRS)/138/29
dated 31-3-1999 is given as follows:
i) Policy regarding standardization of electrical assets like locos/EMUs,
OHE/PSI, TL & AC, Power Supply etc and equipments thereof.
ii) Adoption of new technologies.
iii) Technical policy matters.
iv) To work as ‘Steering Committee’ for all MSGs.
v) Staff Yardsticks for maintenance and construction.
vi) Manpower Planning, Training Needs, Educational Qualifications for
recruitment grades and Cadre Planning.
vii) Standardization of infrastructure pertaining to electrical assets e.g. sheds/shops,
traction sub-stations, OHE/PSI depots and training institutions etc.
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Compendium of ESC 1935-2014 Page 5
DETAILS OF ESC MEETINGS HELD SINCE 1935
Year ESC No Date Venue Organized by
1935 1st September 1935 Shimla CSO
1936 2nd
August1936 Shimla CSO
1937 3RD
August 1937 Shimla CSO
1938 4th
August1938 Shimla CSO
1939 5th
August1939 Shimla CSO
1940 6th
November 1940 New Delhi CSO
1949 7th
February 1949 New Delhi CSO
1950 8th
February 1950 New Delhi CSO
1951 9th
March1951 Bombay VT CSO
1952 10th
March1952 Bangalore, SR CSO
1953 11th
March1953 New Delhi CSO
1954 12th
March1954 Calcutta CSO
1955 13th
March1955 Madras CSO
1956 14th
March1956 New Delhi CSO
1957 15th
March1957 New Delhi CSO
1958 16th
February1958 Calcutta RDSO
1959 17TH
April1959 Calcutta RDSO
1960 18th
April1960 Bangalore RDSO
1961 19th
April1961 - RDSO
1962 20th
April/May1962 Bombay RDSO
1964 21st March1964 Baroda RSC
1965 22nd
April1965 Calcutta SER
1966 23rd
March1966 Bombay WR
1967 24th
September 1967 Lucknow RDSO
1970 25TH
July1970 Bhopal BHEL
1972 26th
December 1972 Calcutta SER
1974 27th
September 1974 Secunderabad SCR
1976 28th
January1976 Bombay CR
1977 29th
March 1977 Madras SR
1978 30th
April 1978 Calcutta ER
1979 31st July 1979 Bombay WR
1981 32nd
July 1981 Calcutta SER
1982 33rd
October 1982 New Delhi NR
1984 34TH
April 1984 Secunderabad SCR
1985 35th
December 1985 Madras SR
1987 36th
May1987 Gorakhpur NER
1989 37th
January 1989 Calcutta SER
1990 38th
April 1990 Nasik IRIEEN
1991 39TH
December1991 Bombay CR
1992 40th
November1992 Bombay WR
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Compendium of ESC 1935-2014 Page 6
Year ESC No Date Venue Organised by
1982 41st (1
st
traction)
December 1982 Calcutta ER
1984 42nd
(2nd
traction)
November 1984 Bombay WR
1986 43rd
(3rd
traction)
September1986 Madras SR
1992 44th
(4th
traction)
September 1992 Nasik IRIEEN
1994 45th
(5th
traction)
January1994 New Delhi NR
1995 46th
(6th
traction)
April 1995 Madras SR
1996 47th
(7th
traction)
September 1996 Bombay WR
1997 48th
(8th
traction)
November 1997 Goa SCR
1999 49th ESC 18th
& 19th
January 1999 Pune CR
2000 50th ESC 7th
&8th
August 2000 Secunderabad SCR
2001 51st ESC 11th
&12th
October2001 Vizag SER
2003 52nd
ESC 12th
& 13th
February2003 Nasik IRIEEN
2004 53rd
ESC 18th
& 19th
March2004 Chennai SR
2006 54th
ESC 17th
& 18th
March2006 Shimla NR
2007 55th
ESC 28th
& 29th
May2007 Nainital NER
2009 56th
ESC 31st July & 1
st August 2009 New Delhi NR & RB
2011 57th
ESC 3rd
& 4th
June2011 Pune CR
2012 58th
ESC 28th
& 29th
September 2012 Jaipur NWR
2014 59th
ESC 6th
& 7th
March2014 Goa KRCL
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1stELECTRICAL STANDARDS COMMITTEE
MEETING
Members Present
S. No. Name /Shri Designation Railway
1. A.F. Wilson CEE& Chairman Madras &SouthernMahratta Railway
2. S.Simpson CEE (Member) North Western Railway
3. H.J.Allinson CEE (Member) East Indian Railway
4. T.G. Creighton Dy. CCS (Secretary) Railway Board (SHIMLA)
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Subject 1:-Cardan Shaft Drive.
(Paragraph 40 of the 15th
Report of Carriage and Wagon Standard Committee)
Recommendations& Decision:
Paragraph (1) - The Committee noted -
(a) that the train lighting gear drive supplied by Messrs. Mather & Platt and Company to
the Madras and Southern Mahratta Railway has proved a failure and as the firm were
unable to guarantee a satisfactory job, the trials have been abandoned;
(b) that after 38,000 miles service, the East Indian Railway found it necessary to renew the
rubber pads in the Stones gear. The firm have supplied an improved type of moulded
rubber section for the cush drive and experiments are continuing;
[A. E. S. A equipment has so far completed 7.000 miles satisfactory service.]
(c) that the Stones Cardan Shaft drive equipment had completed approximately 32500
miles on the North Western Railway when it was observed that the gear assembly was
slack on the axle and had a diametrical movement of ¼” between gear housing and the
axle. On examination uneven displacement of the rubber cushions was found which
appeared due to the uneven taper of the I. R. S. axle design. After reference to the
suppliers, it was arranged that they would provide new moulded rubber pads together with
a complete new torque reaction assembly and this has been fitted to a parallel axle. The
coach will shortly be put into service for further trial;
[The A. E. S. A. Cardan Shaft Drive equipment will shortly be put on trial.]
(d) The Committee opined that if axles were machined parallel, the application of the
Stones gear will be simplified and the initial and recurring costs should be capable of
reduction. The machining of parallel axles to accommodate and to facilitate alignment of
axle pulleys is being considered at the next meeting of the Carriage and Wagon Standards
Committee.
Paragraph (2).- The Electrical Standards Committee, however, express doubt if any form
of Cardan Shaft Drive will be financially justifiable due largely to-
(i) enhanced initial cost. of the equipment compared with the belt drive;and
(ii) the improved results obtained in recent years with the belt drive.
Subject2:-Water Raising Apparatus.(Paragraph 45 of the 15th
Report of Carriage and
Wagon Standard Committee)
Recommendations& Decision:
Paragraph (3).- The Committee note that-
(a) Arrangements are in hand on the East Indian Railway and the North Western
Railway for six trial sets of each of the water raising apparatus to sketches Nos. 3507 and
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3508 to be tried out. Results of these trials will, where possible, be compared with the
experience gained up to date with the tap switch control and also the earlier compressed air
water raising apparatus.
(b) the new sample I. R. S. bogie third class carriage, now under construction by the
Great Indian Peninsula Railway, will be fitted with the type of water raising system shown,
vide sketches 3507 and 3508 accompanying the 15th Report of the Carriage and Wagon
Standards Committee and will be available for demonstration and inspection in November
1935at Delhi.
Paragraph (4)- The Electrical Standards Committee are of the opinion that the
electrically Driven centrifugal pump system with roof regulating Tank and float control
switch will prove to be the most efficient method for water raising in carriages with under
slung tanks.
The importance of carrying out the experiments ordered, vide paragraph 45 of 15th
Report
of the Carriage and Wagon Standards Committee is appreciated and endeavors should be
made to expedite these trials and to submit reports as soon as practicable.
Subject3.-To examine the Sunbeam type of locomotive switchbox.
Recommendations& Decision:
Paragraph (5).- The Committee examined the" Ralco " combined switch and fuse box and
recommend that this type be accepted as a permissible I. R. Standard provided that the
dimensions and pitches of fixing holes are made in accordance with drawing No. CSL 585.
Subject4.-To consider draft I. R. S. Specification E-5 for the Inter-vehicle Coupler Cable.
Recommendations& Decision:
Paragraph (6).- The Committee examined the remarks and suggestions of the Indian Stores
Department on draft specification E-5. (Vide Chief Controller, Indian Stores Department,
letter No. I-46/934 dated 17th September 1935).
Paragraph (7) (a).-It was agreed that the draft I. R. S. Specification E-5 should be amended
to provide for copper conductors complying generally with B. S. I. Specification No.7 of
1926and any subsequent amendment thereto. Accordingly, at the end of paragraph 2 of E-5
it is suggested that the followingwords be added-
"The copper conductors shall comply with B. S. I. Specification No. 7 of 1926 and any
subsequent amendment thereto."
(b) Pure rubber insulation is not required.
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Compendium of ESC 1935-2014 Page 10
(c) In the absence of further information regarding manufacturing practice, the Committee
are unable at present to make definite recommendations on the acceptance of the
suggestions contained in sub-paragraphs (ii), (iii), (iv) and (v) of Chief Controller, Indian
Stores Department letter No. 1-46/934 dated 17th September 1935, and it was arranged to
ask the Indian Stores Department to kindlymake enquiries from approved cable
manufacturers and furnish the Committee with information regarding-
(i) the precise description of the insulation next to the conductor and also subsequent
layers and sheathing, in order to ensure that anything inferior to tough rubber
insulation shall be excluded; and
(ii) whether copper conductors are tinned or not.
(d) The Committee suggest that the following words be added after the letters “B. S. I."
in paragraph 3 of the draft I. R. S. Specification E-5.
“Specification No.7 of 1926 and any subsequent amendment thereto for tough rubber
sheathed 250 volt grade cable."
. (e) The Committee also suggest that the latter portion of paragraph 5 of-the draft
specification be reworded as follows-
“ A test pressure of 1000 volts for fifteen minutes as laid down in B. S. I. Specification No.
7 of 1926 and any subsequent amendment thereto for tough rubber sheathed cable 250 volt
grade."
(f) With regard to paragraph (vi) of the suggestions contained in Chief Controller,
Indian Stores Department, letter No. 1-46/934 dated 17th September 1935, the Committee
recommend that the following clause be incorporated as paragraph 6 of the draft
specification, the existing paragraph 6 being renumbered as paragraph 7.
“Insulation Test.-The insulation test shall be taken with not less than 300 volts. The
insulation resistance of any single conductor in the cable from earth or of any conductor in
the cable from the other conductors and earth shall not be less than a minimum of 600
mega ohms per mile."
Subject5:- To consider and advise on the most suitable weight of wire, both copper and
iron, which may be permitted to be used by the Posts and Telegraphs Department (or
private companies) in crossing over railway power transmission lines.
Recommendations& Decision:
Paragraph (8) (a).-With regard to the erection of power lines crossing railways, by
authorities operating under the Indian Electrical Act, the Committee adhere to the
recommendations contained in page 16 of the 1930 Report of the Committee of Electrical
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Compendium of ESC 1935-2014 Page 11
Engineers “regulations governing placing of electric transmission lines across Railway
tracks."
(b) With regard to communication wires. the Committee consider that the recommendation
included under paragraphs IX and X at page 18 of the 1930 report Committee of
Electrical Engineers shall be adhered to, except that there should be no restriction as to
the cross-section of conductor.
Subject6:-(i) To consider the adoption for use on railways of certain published I. S. D.
specifications for electrical equipment.
(ii) To comment on certain draft I. S. D. electrical specifications with a view to their future
adoption for use on railways (File EL/AG).
Recommendations& Decision:
Paragraph(9)(a).- These two subjects were dealt with together and the Committee
examined the printed list of published I.S.D. Specifications and the list of those prepared in
draft form. It was agreed that the following I.S.D. Specifications for electrical equipment
are likely to be of use to railways, subject to certain desirable amendments.
H. 34 A-Insulators, porcelain, pin and shackle type. for overhead transmission lines up to
650 volts working pressure.
H. 50 A-Bridge megger testing sets. (Corrigendum No. 1 of November 1933).
H. 55 F.-Fans. ceiling with regulators (D. C.)
H. 58 B.-Wood casing and capping for electric wiring.
H. 61 D.-Cables electric power, paper insulated, lead covered and double steel tape
armoured.(Corrigendum No. 1 of September 1934).
H. 66 C.-Composition insulators. (Corrigendum August 1933).
H. 71 C.-Wire, copper, silk covered.
H. 72 B.-Wire, copper. cotton covered. (Addendum No. 1 of September 1934).
H. 80 A-7-Strand steel wire 450 Ibs. per mile.
H. 81 A-Internal wiring of buildings.
H. 82 A-Wood casing and capping for internal wiring of buildings.
P.I. 75 B.-Rotary converters.
P.I. 76 B.-Transformer core type, oil-immersed, self cooled for power and lighting.
P.I. 81 B.-Switch~board-660 volts. direct current-open type.
H. 57 A.-Cable, single core, V. I. R. insulated (250 volts 600 megohm grade).
H.67 B.-Single core, V. I. R. Flame-Proof and fire~resisting cable (250 volts, 600 megohm
grade).
H. 69.-Single core V. I. R. Tropical grade insulated cable (250 volts, 600 megohm grade).
H.46 C.-250 volts, 600 megaohm grade flexible cords or cables, braided, single or twin,
insulated with pure and vulcanised India-rubber, glazed cotton, silk or workshop finish.
H. 45.-Poles, Tubular Steel.
(b) The following printed and draft I.S.D. Specifications concern signal and interlocking
materials and Electrical Standards Committee suggest that their adoption on railways be
referred to the Signalling and Interlocking Standards Committee.
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Compendium of ESC 1935-2014 Page 12
H. 27 A-Cable, electric, dry core, paper insulated, telegraph, multiple, twin telephone and
composite.
H. 28 A -Cable, electric, dry core, paper insulated (telephone).
H. 29 A-Copper and bronze jointing sleeves, for telegraph and telephone purposes.
H. 42 A-Condensers, metal cased, 1st grade for telegraphs and telephones.
H. 68 C.-Two and four core, twin and quad twisted, compound-insulated, lead-covered and
arrnoured, telegraph cable; under water type.
H. 73 A.-Four core, rubber-insulated, lead-covered and under water, telegraph cable.
H. 76 B.-Insulators, porcelain, screw pattern.
H.77A-Cable, rnulti core, telephone switch-board (tropical pattern with enamelled
conductors).
H. 94.-Glass battery jars.
H. 96 B.-Overhead spanning aerial line cable.
H. 103.-Sack elements for Leclanche Cells.
Paragraph (10) -The Committee then perused I. S. D. Specification H. 55F as an example
and it was noted that the temperature rise is omitted from the specification. Its inclusion is
very necessary. The Committee expressed their diffidence in departing from B. S. I.
specifications which have been found satisfactory in the past, and expressed a desire that
future I. R. S. and/or I. S. D. specifications forelectrical equipment adopted for use on
railways should be based on the appropriate B. S. I. specification suitably amplified to
meet Indian conditions.
Paragraph (11)(a)-It was arranged that the following I. S. D. printed specifications prior to
their adoption for railways' purchases should be circulated to Electrical Standards
Committee Members for their individual comments and suggestions.
H. 34 A-Insulators, porcelain, pin and shackle type, for overhead transmission lines up to
650 volts working pressure.
H. 50 A-Bridge megger testing sets. (Corrigendum No. I of November 1933).
H. 55 F.-Fans, ceiling with regulators (D. C.)
H. 58 B.-Wood casing and capping for electric wiring.
H. 61 D.-Cables electric, power, paper insulated, lead covered and double steel tape,
armoured. (Corrigendum No. 1 of September 1934).
H. 80 A-7-strandsteel wire 450 lbs. per mile.
H. 81 A-Internal wiring of buildings.
H. 82 A.-Wood casing and capping for internal wiring of buildings.
(b) On receipt of the views of individual Electrical Standards Committee Members,
necessary, agreed and accepted alterations will be forwarded to the I.S.D. for consideration
and incorporation. After alterations and amendment in the light of the Railway Board and
I.S.D. requirements, these specifications will be again placed before the Electrical
Standards Committee for final approval before adoption.
Paragraph (12).- The Committee considered additional items of electrical equipment for
which specifications (either I. R. S. or I. S. D.)are necessary and recommend that the
preparation of specifications for the following items be undertaken and drafts submitted to
the Electrical Standards Committee in due course.
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Compendium of ESC 1935-2014 Page 13
(a) Motors and control gear.
(b) Arc Welding plant.
(c) Direct electrically driven portable workshop apparatus and tools.
(d) Vacuum exhausters.
(e) Axle pulleys.
(f) Loco. Headlight equipment,
(g) Direct driven oil engine generating units for general stationary purposes.
(h) Electric wiring accessories.
Subject7:-To propose items of electrical equipment which can advantageously be
standardized.
Recommendation and Decision:
Paragraph (13).-With the exception of items of electric traction equipment, the Committee
can suggest no items of electrical equipment for standardization at the present time. The
Committee opine that dimensional standardization of electrical equipment and apparatus
(other than loco. headlight and train-lighting equipment) is undesirable due to variations in
requirements of electrical plant andequipment at site and the rapid progress in electrical
design.
Subject8:-To consider the draft I. R. S. specification E-6 for the Inter vehicle Coupler.
(Paragraph 43 of the 15th Report of the Carriage and Wagon Standards Committee.)
Paragraph (14).-The Committee examined the draft specification-for E-6 and suggest the
following modifications.
(a) The heading to read as follows.
“Indian Railways Standard Specification for 5 wire inter-vehicle electric couplers
for B. G. and M. G. coaching vehicles."
(b) Paragraph 1 of the draft specification
For sub-para. (c) read " cable coupler plug,"
For sub-para. (d). read “coupler socket."
(c) Paragraph 2 of the draft specification-
(i) For " contact blocks " read " terminal blocks."
(ii) The panels of the 5-way junction boxes should be non-hygroscopic and
madefrom red vulcanized fibre of the best quality.
(iii) The terminal blocks should be marked for identification as shown on the
drawing.
(iv) The cable eye-socket should be so fitted to"the terminal blocks to prevent radial
movement and contact with other adjoining cable sockets.
(d)Paragraph 3 of the draft specification –
For "prong connectors” read "pin' connectors as shown on E.S.C. Drawings Nos.
10-11."
(e) Paragraph 4 of the draft specification -
(i) For" non-conducting" read "moulded insulating."
(ii) Omit the words “red vulcanized fibre"
(f) Paragraph 5 of the draft specification.
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For " mild steel screws " read " brass screws."
(g) Corresponding corrections to be carried out, where necessary, throughout the
draft specification.
Paragraph (15): The Electrical Standard Committee are of the opinion that the accessibility
to terminals provided in the Acme junction box is an improvement on the stones pattern
and recommend that the pitch and dimensions of fixing holes of the Acme type should be
adopted as the I.R. Standard.
Paragraph (16): The Committee also perused the Electrical Standard Committee drawings
No.8-12 of the I.R. Standard IVC and recommend their adoption.
Paragraph (17):The Electrical Standard Committee agree tat the combined junction and
fuse box should continue to be covered by I.R.S Specification E-3.
Subject9. To consider the proposal of the C.M.E., G. I P.Railway, that a larger capacity
cable 19/'064 be used for the auxiliary mains instead of the present cable 7/' 052 having a
37 amp capacity which is considered unsuitable.
Paragraph (18) The Committee agree that it is necessary to increase the capacity of the
negative auxiliary main for new wiring. .
They further recommend the auxiliary lighting positive and the auxiliary fan positive
mains shall be increased. The following sizes are recommended for adoption:-
(a) Auxiliary negative main 19/.044.
(b) Auxiliary lighting positive 7/.052.
(c) Auxiliary fan positive 7/.064.
Subject10.-Combined junction and fuse box. To consider proposals and sketches
submitted by the G. I. P. Railway to redesign the combined junction and fuse box.
Recommendation and decision:
Paragraph (19)(a).--The Committee consider that the existing dimensions of the box
should be retained but its location raised approximately 4" for the cable entrance to clear
the top rail thus avoiding cutting the latter. The free suspended position of the plug coupler
for both the combined box and the junction box must be the same. This will necessitate the
length of the combined junction and fuse boxcoupler cable being about 4" longer than the-
junction box coupler cable. Inter- changeability-of these cables are not important.
(b) The Committee further consider that endeavors should be made to reduce the
weight of- the combined junction and fuse box. They recommend that the manufacturers be
asked to furnish proposals with a view to adopting M. S. or other material.
Subject11.-To consider the comments of Messrs. Jost Engineering Company, on the draft
B. S. specification for Train Lighting Accumulators (Alkaline Type)
Recommendation and decision:
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Compendium of ESC 1935-2014 Page 15
Paragraph (20) (a).-The Electrical Standards Committee consider that as the comments of
Messrs. jost Engineering Company on the draft British specification for Train Lighting
Accumulators (Alkaline Type) with regard to the manufacturers of Messrs. Thomas Edison
Incorporated, New York, concern minor points in construction, the manufacturers may be
expected to fall into line with and abideby the B.S. specification.
(b) The Committee recommend that a time interval of approximately twelve months should
be allowed between the publication of the B. S. specification for Train Lighting
Accumulators (Alkaline Type) and its adoption for use on Indian Railways (with sui-table
amendment to I. R. S. specification E-2/34), in order to enable the Edison Company to
arrange for the necessary minor alterations in designs
of their accumulators necessitated by the adoption of the B. S. specification, if they so
desire.
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2nd
ELECTRICAL STANDARDS COMMITTEE
MEETING
Members Present
S. No. Name /Shri Designation Railway
1. A.F. Wilson CEE (Chairman) Madras &Southern Mahratta Railway
2. H.J.Darling CEE (Member) East Indian Railway
3. S.E.Povey CEE (Member) Baroda and Central India Railway
4. H.J.Allinson Dy. CME (Member) Eastern Bengal Railway
5. T.S.Rau* AEE North Western Railway
6. T.G.Creighton Dy. CC Central Standard Office, RB
* Reprsented Mr R. Simpson, CEE/NWR who was unable to attend due to ill health.
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Subject 1:-To consider draft I. R. S. Specification No. E-5-36 for Inter-vehicle Coupler
Cable.
Recommendation and decision:
The Committee examined the revised draft specification prepared in the Central Standards
Office in the light of information received from Cable makers regarding the insulation and
tinning of the conductors together with the comments received from railways and
recommend the adoption of the revised specification in Appendix A.
Subject 2:- To consider the adoption for use on railways of certain of the following I.S.D.
Specifications for electrical equipment.
Recommendation and decision:
2. The Committee considered the following draft I.S.D. Specifications and recommend
their adoption on railways as per modified drafts in Appendix "E”
(a) H34-B for insulators, porcelain, pin and shackle type for overhead transmission lines
up to 650 volts working pressure.
(b) H50-B for portable electric insulation and resistance testing sets (Bridge meggar testing
sets).
(c) H58-C for wood casing and capping accessories for electric wiring.
(d) H61-E for cables, taper insulated, lead covered and armoured for electric supply.
(e) H71-D for wire, copper, silk covered.
(f) H72-C for wire, copper, cotton covered.
(g) HS7-B for cable. single core, pure and V. I. R insulated, taped, braided and
compounded 250 volts, 600 megohms grade).
(h) H69-A for cable. single core. V. I. R. insulated, tropical grade, taped. braided and
compounded
(J) H46-D for Flexible cords, twin or three core, insulated with pure and vulcanised rubber,
braided with glazed cotton or art silk or workshop finish, 2S0 vults, 600 megohms grade.
(k) H45-A for poles, tubular steel for electric power transmission.
(l) H67-C for cable, single core. V. I. R, flame proof and fire resisting.
3. The Committee considered the following draft I. S. D. Specifications and recommend
their adoption on railways as the materials specified therein purchased by railways- '
(a)H66-C for composition insulators.
(b)H80-A for 7-strand steel wire, 450 lbs. per mile.
4. The Committee also considered the question of the I S. D. being requesteda suitable
specification for composition insulators but in view of their limiteddemand the Committee
decided to drop the matter.
5. Committee also considered the N. W. Railway suggestion that the I.S.D be requested to
draft a specification for gays and stay wires but decided to drop the matter.
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6. Committee note that the following I. S. D. Specifications have been Withdrawn but
recommend that the matter dealt with therein be considered in connection with the draft
Code of Practice, the preparation of which has been recommended for consideration under
subject No. 12:-
(a) H-81A for internal wiring of buildings.
(b) H-82A for wood casing and capping for internal wiring of buildings.
7. The. Committee note that the following draft I.S.D. specification will be taken up for
consideration at their next meeting. They, however, suggest that the case of specification
No. P. I. 76-B the draft may be brought into line with the newly revised B.S.Specification
on the subject.
(a) P. I. 76-B for transformer, core type, oil immersed, self-cooled for power and lighting.
(b) P. I. 81-F for switch board 660 volts direct current open type.
8. The Committee note that the following I S.D. Specifications have been adopted for use
on railways:-
(a) No. H-55G for fans, ceiling with regulators, direct current.
(6) No. P. I. 75-8 for Rotory Convertors.
9. They recommend that in the I. S. D. Specification No. P. I. 75-B for Rotary Convertors,
clauses 3 and 30 be modified as follows:-
Clause 3- The words "shall be in accordance with" be modified to read as "shall not exceed
the speeds shown in."
Clause 30-"When required by the purchaser the successful tenderer shall also supply three
sets of fully dimensioned "as made" drawings, furnishing complete information regarding
size, insulation, section and weight of wire used on all component parts of the machine and
switch gear, and full detailed description, type and grade of the material used for all
renewable parts of the machine and switch gear.
"A separate price shall be quoted for the 'as made' drawings specified above."
"A pamphlet giving detailed information required to effect the necessary repairs and re-
winding shall be supplied."
10. Arising out of this the Committee considered the N. W. Railway suggestion that the I.
S. D. be requested to undertake drafting of a specification for rectifiers.
The Committee are of opinion that the development of these rectifiers is not sufficiently
standardized to warrant the preparation of a specification and thematter may be dropped.
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Subject 3- To consider draft Specification No. E-8-36 for Vacuum Exhausters.
Recommendation and decision:
11. The Committee considered the re-draft of the above specification as prepared in the
Central Standards office and recommend its adoption for use on railways as modified in
Appendix B.
Subject 4.-To consider the necessity for a separate specification for motive power for
driving vacuum exhausters to be issued along with the draft Specification for Vacuum
Exhausters.
Recommendation and decision:
12. The Committee consider that the specification for motive power for driving vacuum
exhausters should be dealt with separately as motive power for driving machinery.
Subject 5.-To consider draft Specification No. E-7-36 for Train Lighting Dynamo Axle
Pulleys.
Recommendation and decision:
13. The Committee considered the draft specification prepared in Central Standards office
for Railways and also the comments received from the variousRailways and recommend
the adoption of the revised specification in Appendix C.
Subject 6.-To consider draft Specification No. E-9-36 for Locomotive Electric Head Light
and Lighting Equipment.
Recommendation and decision:
14. The Committee considered the draft specification prepared in the Central Standards
Office and the comments received from the railways and firms, andrecommend the
adoption of the revised specification in Appendix D.
15. They also suggest that a trial shall be undertaken on the E. I. Railway to determine the
relative steam consumption of 500 and 350 Watt machines atvarious loads and at 160 and
210 lbs. B. W. P.
Subject 7.-To note that I. R. S. Specification No. E-6-36 for 5- wire Inter -vehicle Electric
Couplers for Broad Gauge and Metre Gauge Coaching vehicles has been issued and
published.
Recommendation and decision:
16. Noted
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Subject 8 - To consider the proposed revision of the sizes of auxiliary mains of coaching
stock.
Recommendation and decision:
17. The Committee recommend the following sizes for standardization:
(a) Bogie composite I and II Class.
Lighting Fan Negative
7/.064 7/.064 19/.044
(b)Bogie I class.
Lighting Fan Negative
7/.064 7/.064 19/.044
(c)Bogie brake and lower class.
Lighting Fan Negative
7/.064 3/.029 7/.064
18. Arising out of the discussion on this subject, the Committee expressed a desire to have
a revised standard wiring arrangement with necessary fuse junction and IS-way junction
boxes prepared for the I. R. S. body designs. The C. E. E./M& S. M. Railway promised to
prepare diagrams etc. for future consideration by the Committee.
Subject 9:- To reconsider the question of retention of the present rectangular section of fan
brushes as standard, as referred to in I. R. S. Specification No. E4-34 for Carriage Fans and
Regulators.
Recommendation and decision:
19. The Committee reiterates its opinion that the rectangular 5/16" x3/8 " brush should be
the standard as this shape ensures the brush being fitted correctly.
Subject 10:-Cardan Shaft Drive.
(Paragraphs 1 and 2 of the 1st Electrical Standards Committee Report)
Recommendation and decision:
20. The Committee noted the recent experience of the East Indian Railway with trial
equiprnents. The E. I. Railway conclusions are briefly, that no benefit is derived from the
use of these drives and they possess the following disadvantages:
(a) High capital cost.
(b) Need of highly skilled maintenance staff.
(c) Expensive lubrication.
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(d) Expensive replacement of parts.
21. These conclusions are endorsed by the evidence obtained from the N. W. Railway
trials.
22. The Committee reiterates their opinion as expressed in paragraph 2 of Subject No. 1 in
their First Report.
Subject 11.:- Water Raising Apparatus.
(Paragraphs 3 and 4 of the 1st Report of Electrical Standards Committee. Paragraphs)
Recommendation and decision:
23. The Committee note that experiments are still in hand and await Conclusive results
after further service trials.
Subject 12.:-To consider the desirability of adopting for use on Railways the "Regulations
for the Electrical equipment of Buildings (formerly I. E. E. wiring rules)" issued by the
Institute of Electrical Engineers or (as an alternative) to consider preparing a suitable code
of practice for use on Indian Railways based on the above regulations.
Recommendation and decision:
24. The Committee consider that if standardization of methods and practice is found to be
desirable, the preparation of a Code of Practice for railways will be preferable to adopting
in toto the regulations for Electrical Equipment for buildings issued by the Institution of
Electrical Engineers, but consider that relevant principles of the latter should be
incorporated in the former.
25. They are not unanimous in considering that the adoption of an I. R. S. Code is
necessary or desirable, but they consider that C. S. O. should obtain from individual
railways, copies of their current specifications, etc., for internal wiring and codify in draft
form there from rules and practice common to all railways. Thismay then be circulated for
comment by individual members.
Subject 13.-To adopt as standard the use of conduit wiring inside the coaches of steam
stock for train lighting.
Recommendation and decision:
26. As the subject is already being dealt with by the Electrical Section, I. R.C. A., for
whom the B. B. & C. I. Railway is reporter, it need not at the present juncture be
considered by the Electrical Standards Committee.
27. Arising out of the discussion of this subject it appears that a conduit system is suitable
for lower class carriage wiring.
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Subject 14.-Electrical Part Drawings:- To make recommendations in regard to
classification of electrical fittings (other than those used on steam locos. coaching vehicles
and interlocking equipment.
Recommendation and decision:
28. The Committee consider that the E classification should cover the future
standardization of electrical items (other than those used on steam locos, coachingvehicles
and interlocking equipment) e. g., motor and control gear, direct electrically driven
portable workshop apparatus and tools, direct driven I. C. engine generating units for
general stationary purposes, electric wiring accessories, traction and control equipment for
electric locos, rolling-stock, railcars etc.
Subject 15:- To consider the acceptance of the Baldwin 11314 A type headlight as a
permissible alternative.
Recommendation and decision:
29. In view of the fact that videSubject No.6, the Committee do not recommend the use of
glass reflectors; the headlight shown on Messrs. Baldwin Locomotive Works' drawing No.
14028 cannot be accepted as a permissible I. R. S. alternative, until the design is modified
in accordance with I. R. S. Specification E9-36.
Subject l6.:-Dynamo Hanger Suspension W. 5000. To consider a proposal by the Deputy
Chief Mechanical Engineer, E. I. Railway, to machine the fitting to the dimensions shown
in the ferro in order to facilitate better alignment of the pulleys.
Recommendation and decision:
30. The Committee recommend that the E. I. Railway modification to W. 5000 should be
referred back to that railway asking for reasons why difficulty is experienced in obtaining a
correct alignment with a taper of 1/16". On the evidence available, 3/16" taper as proposed
by the East Indian Railway appears to be excessive.
Subject 17.-Axle Pulley-To consider modification to dimensions to the standard axle
pulleys.
Recommendation and decision:
31. The Committee agree to the overall dimensions of the standard M. G. pulley being
reduced to 16" diameter on the face.
32. They doubt the advisability of reducing the width of the pulley face between flanges
(and corresponding length of axle seat). They alsodo not desire the depth of the flange to
be reduced below 1".
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33. Similarly, the Committee do not desire any reduction to be made in the present
diameter and Width of face of the standard B. G. pulley, viz. 24 X l0.5".
Subject 18:-Consumption of bulbs on engines. To suggesta design on the lines of Loco
Standards Committee drawingNo. 269 or any similar method to obviate the
excessiveconsumption of bulbs on engines.
Recommendation and decision:
34. The Committee await the results of trials in hand with locking arrangements.
35. They are skeptical about establishing financial justification for any locking
arrangement and consider that the most effective method of reducing the consumption of
bulbs would be for the Operating (Power) Department to initiate a drive against thefts and
to enforce rigid discipline in loco. sheds. They also suggestthat locomotive lighting fittings
be considered as items of equipment to be handedover from crew to crew.
Subject 19:-Electric Wiring Accessories.
(Paragraph 12 item (h) 1st meeting ofE. S. C.)
Recommendation and decision:
36. The Committee recommend the adoption of the following B. S. Specifications and
consider that no additional I. R. S. or I. S. D. Specifications are necessary at present for
electric wiring accessories.
B. S. S. No. 7-1926.-Copper conductors, insulated annealed for Electric Power and Light.
Dimensions of (including pressure tests). (Add. February 1927, July 1934 December 1935
and March 1936). (See No. 480-1933).
B. S. S. No. 31-1933.-Steel conduits ad fittings for electric wiring.
B. S. S. No. 67-1929.-Ceiling roses, two and three-plate.
B. S. S. No. 88-1931.-Electric cut-outs, type O. (Add. March 1935).
B. S. S. No. 98-1934.-Edison-type screw lamp caps and lamp-holders.
B. S. S. No. 109-1934.-Air-break knife switches and air-break isolating switches for
voltages not exceeding 660 volts.
B. S. S. No. 110-1934.-Air-break circuit-brakers for voltages not exceeding 660 volts.
B. S. S. No. 124-1934.- Totally-enclosed air-break switches for voltages not exceeding 660
volts.
B. S. S. No. 128-1929.-Bare annealed copper wire for electrical machinery and apparatus,
Dimensions and Resistances of (Add. April 1930 and November 1935).
B. S. S. No. 196-1930.-Reversible protected-type two-pin plugs and sockets with earthing
connections. (Add. October 1930).
B. S. S. No. 216-1926.-Vulcanised fibre for electrical purposes. (Add. February 1927)
under revision.
B. S. S. No. 219-1932.-Soft solders. (Grades A, B, C, D, E, F, G, H, J and K).
B. S. S. No. 231-1936.-Pressboard for electrical purposes.
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B. S. S. No. 279-1932.-Flame-proof type plug and socket heavy duty.
B. S. S. No. 372-1930.-Side-entry wall plugs and sockets for domestic purposes. (Add.
March, 1933 and April 1934).
B. S. S. No. 419-1931.- Varnished cloth sheet, strip or tape for electrical purposes.
Subject 20.- To consider the preliminary draft Specification for Train Lighting Belting on
Railways forwarded by the Chief Electrical Engineer, North Western Railway.
Recommendation and decision:
37. The Committee are not satisfied that a necessity exists for specifying tolerances on the
thickness of train lighting belts. It is significant that the B.S.Specification 351 does not
detail limits of thickness. The Committee recommend that enquiry should be made from
the British Standards Institution as to the reasons why no tolerances are laid down for
thickness in inches or millimeters.
38. In the meantime, the Committee recommend that the I. S. D. adopt a tolerance of ±7.5
per cent on thickness measured against sample, for the purposes of inspection.
Subject 21.-Length of dynamo suspension link on Metre and Broad Gauge when on safety
chains.
Recommendation and decision:
39. The report from the E. B. Railway on trial TWg. 13 to check clearances with different
length of dynamo suspension links is awaited.
40. The E. B. Railway point out that a B. G. axle pulley seat of 6-5/16”can be obtained
when machining the axle parallel.
Subject 22.-To consider a proposal from Messrs. J. Stone & Co. (India) Ltd. to mount the
overvoltage relays on the side of the generators.
Recommendation and decision:
41. The Committee favour the mounting of the overvoltage relay on the side of the
generator.
Subject 23.-Standardization of generator and battery equipment of B. and M. G. passenger
rakes.
Recommendation and decision:
42. (a) The Committee are unanimously of opinion that the present standard capacities of
120 and 80 amp dynamos for broad and metre gauge stock are unnecessarily large for
present requirements. They recommend that the Railway Board's orders on paragraphs 69
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and 110 (ii) of the 10th
and 11th
Carriage and Wagon Standards Committee reports
respectively to purchase 120 and 80 amp machines for broad gauge and metre gauge upper
class composite and brake-vansrespectively should be withdrawn.
(b) The Committee further consider that an early re-examination of the subject of
standardization of generator and battery equipment is necessary. They are of opinion that
this can best be undertaken by sub-committee consisting of Messrs.Darling, Allinson and
Povey who should revise the reports published as Appendix B to the 10th Carriage and
Wagon Standards Committee report on the broad gauge equipment and Appendix A
(Subject No. 21 (a) 1 and 2) of the 11th
Carriage andWagon Standards Committee report
on the metre gauge equipment in the light of modern operating conditions and possible
future loadings. To enable this to be undertaken the sub-committee require to be furnished
by the Railway Board with information regarding the possibilities of:
(i) Electric fans being installed in lower class carriages, and
(ii) water-raising apparatus being found necessary on all broad gauge stock.
Subject 24.-To comment on certain draft I. S. D. Electrical Specifications with a view to
their future adoption for use on Railways.
Recommendation and decision:
43. The Committee agree that the following I. S. D. Specifications for electrical equipment
are likely to be of use to railways, subject to certain modifications and recommend that
they be circulated to Members of the Electrical Standards Committee for their individual
comments and suggestions, after which revised drafts may be placed before the Electrical
Standards Committee for final approval before adoption.-
(a) P. I. 135-Induction motors.
(b) P. I. 136-Iron clad type starting and control panels for non-reversing A. C. Motors up to
660 volts.
(c) P. I. 82A-D. C. generators 3-wire type and static balancers.
(d) P. I. 77-C-Normal speed revolving field type alternators.
(e) P. I. 74-B-D. C. Motors, D. C. Starters.
(f) H 64-C-Fans, electric desk or pedestal type. D. C.
(g) H 65-C-Fans, electric desk or pedestal type. A. C.
(h) H 85-Cable. pure and V. I. R. insulated taped and tough rubber sheathed, 250 volts. 600
megohms grade.
(j) H 86-Cable, single core, pure and V. I. R. insulated, taped and lead sheathed, 250 volt
and 600 megohms grade.
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3rd
ELECTRICAL STANDARDS COMMITTEE
MEETING
Members Present
S. No. Name/Sri Designation Railway
1. A.F. Wilson CEE (Chairman) Madras &Southern Mahratta Railway
2. S.Simpson CEE (Member) North Western Railway
3. H.J. Nash CEE(Member) Baroda and Central India Railway
4. P.D. Low Dy.CME (Member) Eastern Bengal Railway
5. H.J. Mulleneux CEE (Member) Great Indian Peninsula Railway
6. H.J. Darling CEE (Member) East Indian Railway
7. A.Vasudevan Asstt Chief Controller
(Secretary)
Central Standard Office, RB
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Subject 1:-To consider the adoption for use on railways of the following draft I. S. D.
Specifications for electrical equipment.
Recommendation and decision:
(1) The Committee considered the following I. S. D. Specifications and recommend their
adoption on railways as per modified drafts in Appendix A.
(a) No. P. I-74D. Generators and motors, industrial type, direct current.
Reference- Electrical Standards Committee Report No.2, Subject No.24.
(b) No. P. I-43L. Engines, internal combustion (using crude oil). Reference Electrical
Standards Committee Report No.2, Subject No.4.
(c) No. P. I-76C. Transformers, Core type, oil immersed, self cooled, for power and
lighting.
Reference Electrical Standards Committee Report No.2, Subject N0. 2,
(d) No. P. 1-77d. Alternators, engine driven, revolving field, salient pole, normal speed,
with Class A insulation.
Reference:-Electrical Standards Committee Report No.2, Subject No. 24. para. 43, item
(e) No. P. I-81F. Switch-board, direct current, open type, when voltagedoes not normally
exceed 6S0 volts. Reference Electrical Standards Committee Report No.2, Subject No.2,
(f) No. P.I.-82B. .Generators, D. C., three wire and static balancers with Class A
insulation.
Reference Electrical Standards Committee Report No.2, Subject No. 24,
(g) No. P. I.-135B. Motors, induction with Class A insulation.
Reference-Electrical Standards Committee Report No.2, Subject No. 24,
(h) No. H-64D. Fans, electric, desk or pedestal type, direct current.
Reference Electrical Standards Committee Report No.2, Subject No. 24,
(i) No. H-65D. Fans, electric, desk or pedestal type, alternating current.
Reference-Electrical Standards Committee Report No.2, Subject No. 24,
(2) The Committee note that the following I. S. D. Specifications will be taken up for final
consideration at their next meeting. They also recommend that in the case of I. S. D.
Specification No. P. I.-136A for panels, starting and control, iron clad type, for non-
reversing alternating current motors up to 660 volts, the I. S. D. be requested to prepare a
separate specification for fully interlocked type control gear.
(a) No. P. I.-136A. Panels, starting and control, iron clad type, for non-reversing
alternating current motors up to 660 volts.
References Electrical Standards Committee Report No.2, Subject No. 24, para. 43, item
(b) No. H-85. Cable, pure and V. I. R. insulated, tape and tough rubber sheathed, 250 volts,
600 megohms grade.
Reference Electrical Standards Committee Report No.2, Subject No. 24,
(c) No. H-86. Cable, single core, pure and V. I. R. insulated, taped and lead sheathed, 250
volts, 600 megohms grade.
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Reference Electrical Standards Committee Report No.2, Subject No. 24,
(3) (a) H-120A. Batteries, stationary, lead acid type.
The Committee recommend that the above draft specification should be modified as per
draft in Appendix B and forwarded to the Chief Controller of Stores, Indian Stores
Department, for consideration and circulation to manufacturers for comment.
Subject 2.-Draft I.R.S. Specification No. E9-36 for Locomotive Electric Headlight
equipment.
Recommendation and decision:
Reference Electrical Standards Committee Report No.2, Subject No.6.
The Committee considered the tabulated statement of the comments offered by the
members of the Loco. Standards Committee circulated with Central Standards Office letter
No. SS /HLE, dated 4th February 1937 and recommend adoption of the draft I. R. S.
Specification No: E9-36 for Locomotive Headlight and Lighting equipment modified as
follows for use on Railways:-
(i) At the end of clause 2, insert the following sub-para:-
“Impregnation-windings shall be specially impregnated under vacuum to withstand
Indian climatic conditions."
(ii) Clause 3-
Sub-para. 1, line 8.-For the words "14" diameter reflector "substitute "14" or "18" diameter
reflector as specified by Purchaser."
,' (iii) Clause 3-
Sub-para 2-Casing.-After second sentence, insert the following sentence:-
The glass shall be reinforced in such a manner that it shall not develop discoloration whilst
in service."
(iv) Clause 3-
Sub-para. 3-Reflector, lines 1 and 2.-For the words. "chromium or silver-plated" read
"chromium plated."
(v) After clause 6, insert the following new clause as clause 7 and renumber the subsequent
clauses:-
Interchangeability.-"Whenseveral sets of the same type and make are ordered, all
corresponding parts shall be interchangeable."
(2) As the 350 watt turbo generator is not procurable, no trial could be undertaken. In the
circumstances, the Committee are of opinion that the 500 watt turbo generator should be
retained as standard. They are also of opinion that the efficiency of the 500 watt turbo
generator can be improved under average service conditions by the provision of a steam
nozzle designed to give maximum efficiency at a load of 300 watts consistent with the
boiler pressures stated in clause 2 of the Specification.
Subject 3.-To consider Tender notice, Specification, etc. for electrical wiring of Railway
buildings.
Reference: Electrical Standards Committee Report No.2, Subject No. 12.
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Recommendation and decision:
(i) The Committee recommend standardization of the draft tender formand draft I. R. S.
Specification No. A 6-37, vide Appendix C.
(ii) They, however, consider that the details of the draft I. R. S. Specification No. E 11-37
and the comments thereon received from railways can best be dealt with by the Secretary
in consultation with the Chief Electrical Engineer, North Western Railway, and they
recommend that this officer prepare a revised draft which may be circulated to members
with a view to obtaining their final approval.
Subject 4:-Train Lighting belting on Railways.
Reference Electrical Standards Committee Report No.2, Subject No. 20.
Recommendation and decision:
(a) The Committee note that a reply from the British Standards Institution regarding
tolerances for thickness of belts is awaited by the Central Standards Office.
(b) The Committee recommend that the following Sizes of belting may be standardized.
3" width for dynamos up to 75 amps. capacity.
4" width for dynamos up to 80 amps. Capacity and over.
They also recommend that all- belting should be 4 ply, (3/16"), in thickness
Subject 5.-To consider the modification to I.R.S. Specification No. E1-34 for Dynamos for
train lighting suggested by Chief Electrical Engineer, North Western Railway in his letter
No. TL/19/23/IIdated 9th April 1937.
Recommendation and decision:
The Committee consider that the I.R.S.Specification No. E1-34 should be revised as per
modifications suggested in Appendix D.
Subject 6.-To consider revision of I. R. S. Specification No. E2-34 for batteries for train
lighting.
Recommendation and decision:
The Committee recommend that separate specifications should be drafted for train lighting
& batteries-(1) Alkaline type and (2) lead acid type, as per drafts in Appendix E, and
recommend their adoption.
Subject 7.-To consider modification to I. R. S. Specification No. E6-36 for Inter vehicle
Electric Couplers as suggested by Messrs Stone & Co. in paras. 2 to 5 of their letter No.
LON/34/36,dated 9th
March 1937(Extract at Appendix F).
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Recommendation and decision:
The Committee agree with the modifications suggested by Messrs. J. Stone & Co. (India)
Limited, in paras. 2 to 5 of their letter quoted above and recommend that I. R.S.
Specification E6-36 for Inter vehicle couplers should be modified accordingly.
Subject 8.-To consider standardization of carbon brushes fordynamos and fans.
Recommendation and decision:
(i) The Committee consider that standardization of carbon brushes fordynamos and fans is
not feasible.
(ii) The Committee recommend that B. S. S. No. 96-1922 may be accepted for general
purposes.
Subject 9.-To consider the standardization of electrical bells.
Recommendation and decision:
The Committee consider that standardization of electrical bells is notPracticable.
Subject 10.-To consider the adoption of B. S. Specification No. 698-1936 for paper,
unvarnished, for electrical purposes.
Recommendation and decision:
The Committee recommend that B. S. S. No. 698-1936 be adopted foruse on railways.
Subject 11: To consider the standardization of Electrical recording instruments.
Recommendation and decision:
The Committee consider that B. S. Specification dealing with this class of apparatus may
be adopted. The apparatus does not lend itself to standardization.
Subject 12.-To consider standardization of cables, V. I. R. for railway carriages.
Recommendation and decision:
The Committee consider that I.S.D. Specification No. H67-C for cable, single core, V. I.
R., flame proof and fire resisting, can be used for carriage wiring. Sizes of the Coaching
mains have already been standardized, vide Subject No.8 of the 2nd Electrical Standards
Committee meeting.
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Subject 13:- To consider the offer by Messrs. Amplilux Lighting and Illumination Co.
Ltd., of two sample prismatic rings for test on 100 and 60 watt lamps for lighting railway
carriages, workshops and other buildings.
Recommendation and decision:
The Committee recommend that the firm may be asked to send further particulars
including the names of the Indian agents and samples to the Deputy Chief Mechanical
Engineer (Electrical) E. B. Railway for trial purposes. The Committee note that the Chief
Electrical Engineer, M. & S. M. Railway, has already made arrangements with the firm to
obtain similar information and samples.
Subject 14:- To consider the extent to which standardization of electrical fittings on
railway carriages covered by 'C' part drawings should stand.
Recommendation and decision:
The Committee endorse the recommendations of the 19th Carriage and Wagon Standards
Committee in Appendix C, except in the case of item CA. 662 fixing plate for combined
junction and fuse box, which is found to be unsuitable. The Committee note that the G. I.
P. have submitted alternative proposals for this item.
Subject 15.:Water raising apparatus. To consider results of trials.
Reference:- Electrical Standards Committee Report No.2, Subject No. 11, para. 23
Trial No. TCd. 31.
Recommendation and decision:
The Committee have noted the defects so far experienced during the trials carried out by
the G. I. P. and N. W. Railways and await the results of further trials with existing and
modified equipments.
Subject 16.-Fitting of 15 way link junction box at opposite end of coach from 24 way
junction fuse box.
Reference:-Electrical Standards Committee Report No.2, Subject No.8, paras. 17 and 18.
Recommendation and decision:
The committee recommend acceptance. of the arrangement of the 15 way link junction box
shown on M. S. M. Railway drawings ED. 1561/36 and ED. 1523/36.
Subject 17.-To consider the acceptance of Baldwin 11314-A type headlight as a
permissible alternative.
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Reference:-Electrical Standards Committee Report No.2, Subject No.15, para. 29. 19th
Loco. Standards Committee Report, para. 145.
Recommendation and decision:
The Committee note that the Loco Standards Committee at their 19th
meeting have
endorsed the remarks made by the Electrical Standards Committee their Second Report,
Subject No. 15, para. 29.
Subject 18.-Dynamo Hanger Suspension W. 5000.
Reference-Electrical Standards Committee Report No.2, Subject No. 16, para. 30.
Recommendation and decision:
The Committee note that the M. & S. M. proposal shown in Sketch No. 3713 appended to
the 18th Report of the Carriage and Wagon StandardsCommittee has been approved by the
Board.
Subject 19.-Axle pulley for dynamos-Metre Gauge.
Reference- Electrical Standards Committee Report No.2, Subject No. 17, paras. 31 and 32.
Trial No. TWg. 15.
Recommendation and decision:
The Committee note that Eastern Bengal and Bengal and North Western Railways are
carrying out trials with 7" wide pulleys and that their trial reports are awaited by the
Central Standards Office.
Subject 20.-Axle pulley for Dynamos-Broad Gauge.
Reference- Electrical Standards Committee Report No.2, Subject No. 17, para. 33.
Recommendation and decision:
The Committee accept the recommendation of the Carriage and Wagon J Standards
Committee that pulleys 20" and 24" diameter and 7" wide with 4" maximum belt width
should be standardized.
Subject 21.-Consumption of bulbs on engines. To investigate the subject of locking
arrangement for cab light bulbs and submit a specific recommendation supported by
analyses of replacements and costs.
Reference-Electrical Standards Committee Report No.2, paras. 34-35.
Recommendation and decision:
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The Committee recommend the adoption of bayonet caps for cab light bulbs and the use of
lamp locks.
Subject 22:-To consider certain discrepancies in C.S.E. Drawings Nos. 8, 10, 11 and
12.
Recommendation and decision:
The Committee recommend that the length of B. G. Inter-vehicle coupler cable for
standard stock should be 6'-7" for combined fuse and junction box and 6'-2" for terminal
box.The length of inter-vehicle coupler cable for M. G. stock is recommended to be 5'-4”.
The Committee recommend that C. S.E. Drawing No. 10 be amended to show the groove
for the set screw to be on, the PM side.
The Committee recommend that the bore of the plug shown on C. S. E. Drawing No. 10 be
machined to the tolerances specified.
The Committee recommend that the dimensions stated by Messrs. Stone& Co. for the
rubber block be accepted and that C. S. E. Drawing No. 12 be amended accordingly. The
drawing should also show the casting recessed to accommodate the rubber block.
Subject No. 23:-Length of dynamo-suspension link on Metre andBroad Gauge when
on safety chains.
Reference:-Electrical Standards Committee Report No.2, Subject No. 21, paras. 39 and 40.
Recommendation and decision:
The Committee await the results of trials on the Eastern Bengal Railway.
Subject 24.-Standardization of generator and battery equipment of Broad and Metre Gauge
passenger rakes.
Reference:- Electrical Standards CommitteeReport No.2, Subject No. 23, para. 42 (b).
Recommendation and decision:
(i) The Committee have considered the Sub-Committee's interim report by Messrs.
Darling, Allinson and Nash (Appendix G) and are in general agreement with the
conclusions contained therein. In view of the conditions prevailing on certain railways
arising from the alkaline battery now under investigation and until the results of the present
review of rake formation and coaching stock standards of accommodation are known the
Committee are not able to submit any final recommendation at this stage.
(ii) The Committee await the further report of the Sub-Committee in regard to the
standardization of generator and battery equipments on Metre Gauge stock.
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Subject 25.-To record approval of the use of non-flame proofcables in steel conduits in
steel motor vans.
Recommendation and decision:
The Committee record their approval.
Subject 26.-To consider standards for electrical equipments used on railways, which
would prevent electrical interference to broad-cast reception.
Recommendation and decision:
The Committee are asked to state whether Government departments could forthwith
arrange that all electrical machinery existing as well as to be obtained for their use in future
is suitable protected. The Committee are of opinion that any action taken by railways
would be of little or no value without similar action being undertaken by all users of
electrical appliances which are admittedly likely to cause interference with radio reception.
As to the scheduling of appliances likely to cause interference such appliances have been
detailed in an issue CE (EL) 2954 of the Institution of Electrical Engineers.
In the meantime it is understood that the I. S. D. will make enquiries as to the extra cost
likely to be involved on such appliances (a) if fitted at the time of purchase and (b) if fitted
to the existing machinery.
The Committee would emphasize that a great deal of interference can be ameliorated by
attention to the aerial including the down lead and the wireless receiver.
The Committee are of the opinion that to make radio broadcast receptiongenerally
satisfactory, recourse to legislation will be necessary to enforce the provision of
suppression apparatus on all appliances likely to cause interference.
Subject 27.-Internal Lighting of coaching stock.
Recommendation and decision:
The Committee discussed the subject and agreed that each member should in the first
instance conduct an investigation into the possibility of improving the general lighting of
coaching stock.
The Committee anticipate being in a position to record progress at their next melting.
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4th
ELECTRICAL STANDARDS COMMITTEE
MEETING
Members Present
S. No. Name /Shri Designation Railway
1. A.F. Clay CEE (Chairman) Madras &Southern Mahratta Railway
2. H.J. Darling CEE (Member) East Indian Railway
3. H.J. Allinson CEE (Member) North Western Railway
4. G.E.Martin ACEE (Member) Bombay, Baroda and Central India Railway
5. H.J. Mulleneux CEE (Member) Great Indian Peninsula Railway
6. P.D. Low Dy.CME (Member) Eastern Bengal Railway
7. R.G.Burt OFFICER ON
SPECIAL DUTY
(Secretary)
Central Standard Office, RB
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Subject 1.-To consider the adoption for use on railways, of the following draft I.S. D
Specifications for electrical equipment.
Recommendation and decision:
(a) No. H-85 (Revised July 1937) for Cable, vulcanized rubber insulatedand tough rubber
sheathed 250 volt and 660 volt grades.
Reference:-E.S. C. Report No.3, Subject No.1, para. 2, item (b).
1. The Committee considered the above draft I. S. D. Specification andrecommend its
adoption for use on railways as per the modified draft in Appendix -I, (Page 22).
(b) No. H-86 (Revised July 1937) for Cable, vulcanized rubber insulated, and lead alloy
sheahted, 250 volt and 660 volt grades.
Reference:-E.S. C. Report No.3, Subject No.1, para. No.2, item (c).
2. The Committee considered the above draft I.S.D. Specification and recommend its
adoption for use on railways as per the modified draft in Appendix II, (Page 31).
3. They also recommend that sub-para 2 of the modified draft under clause 17 may be
referred to Cable Makers' Association by the Indian Stores Department for comments, if
any. The matter may then be referred to the Central Standards Office for necessary action.
(c) No. H120-A for Stationary batteries, lead acid type.
Reference-E. S. C. Report No.3, Subject No.1, para. 3 (a).
4. The Committee note that the replies from the manufacturers and Accumulator Makers'
Association are still awaited. The matter may be brought up before the next meeting of the
Electrical Standards Committee.
(d) No. H-126 (Revised January 1936) for Asbestos tape for Electrical
purposes.
5. The Committee considered the above draft I. S. D. Specification andrecommend its
adoption for use on railways as per modified draft in Appendix III, (Page 42).
6. The Committee also recommend that the revised Clause 2 (a) of the modified draft be
referred to the manufacturers by the Indian Store Department for comments before final
adoption. The matter may then be referred to the Central Standards Office for necessary
action.
(e) No. P. 1-136 B (Revised November 1937) for Starting and Control gear manually-
operated type for non-reversing alternating current, poly phase motors up to 650 volts.
Reference:-E.S. C. Report No.3, Subject No.1, para. 2, item (a).
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7. The Committee considered the above draft I. S. D. Specification andrecommend that the
modified draft specification as shown in Appendix IV (page 44) be circulated by the Indian
Stores Department to the manufacturers for comments, if any, and the result communicated
to the Central Standards Office for necessary action.
(f) No. P.I.-142 (January 1938) for Starting and Control gear, manually operated fully
interlocked type, for non-reversing alternating current, poly phase motors up to 650 volts.
Reference:-E.S. C. Report No.3, Subject No. I, para. 2, item (a).
8. The Committee considered the above draft I. S. D. Specification andrecommend that the
modified draft specification as shown in Appendix- V (page 52) be circulated by the Indian
Stores Department to the manufacturers for comments, if any, and the result communicated
to the Central Standards Office for necessary action.
(g) No. P.I.-140 (Revised September 1937) for Starting and ControlPanels, Iron clad type
for D. C. motors up to 650 volts.
Reference:-E.S. C. Report No. I, Subject No.6, para. 12, item (a).
9. The Committee note that the revised draft Specification is awaited from the Indian
Stores Department.
Subject 2.-Arc Welding Sets.
Reference:-E.S. C. Report No 1, Subject No.6, para. 12, item (b).
Recommendation and decision:
10. The Committee note that the draft 1. S. D. Specification for D. C. Electric Arc Welding
plant and equipment is still under preparation by the Indian Stores Department. This may
be carried over to the next meeting.
Subject 3.-Electrical Wiring of Railway Buildings-To consider the revised draft I. R. S.
Specification No. E. 11-38.
Reference:-E. S. C. Report No.3, Subject No.3.
11. The necessity for a Specification covering the technical details for the electrical wiring
of railway buildings was discussed in great detail.
Recommendation and decision:
Owing to the wide variations in climatic conditions throughout India, theCommittee are of
opinion that it is impracticable to cover in one specification all the variables necessary to
meet the different local conditions throughout India unless the specification becomes
unwieldy.
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As the various materials to be used in the electrical wiring of railway buildings are already
covered by I.S.D. Standard, I.R.S. and British Standard Specifications, it is only necessary
to specify the method of installing the material to suit local conditions.
The Committee, therefore, recommend that the Indian Railway StandardConditions of
Contract No. A 6-37 should be accepted by all railways and used in conjunction with their
own technical wiring specification designed to meet local conditions and systems, with due
regard to the principles laid down in the Regulations for the Electrical Equipment of
Buildings published by The Institution of Electrical Engineers of Great Britain, the local
Fire and Insurance Regulations and the Indian Electricity Act and Rules. They further
suggest that with a view to obtaining uniformity in the application of wiring systems,
railways should interchange their Technical specifications.
Subject4:-Dynamos for train lighting-To consider the modification of I. R. S.
Specification. No. E 1-37.
Reference:-E. S. C. Report No.3, Subject No. 5.
Recommendation and decision:
12. Load Adjustment-Clause 17.
The following may be substituted for the last sentence in Clause 17 of I. R. S. Specification
No. E1-37:
The output adjustment device shall be provided in a weather-proof box on the outside of
the frame of the dynamo to facilitate inspection. A hinged lid with the standard train
lighting lock shall be provided.
Protection-Clause 18. Over current.
13. Fuses are acceptable as "current limiting devices"
14. Test at Makers' Works.-Clause 24.
It is felt that Clause 24 (a)-Temperature Rise Test-is not conclusive in so far as temperature
rise under service operating conditions is concerned. The Electrical Standards Committee
are investigating the necessity for the revision of this clause. In the meantime a reply to
this question is deferred.
15. Drawings-Clause 28.
Line 1-Substitute the following:-
The following shall be quoted as an extra and shall be supplied as required by the
Purchaser".
(a) Substitute the following for the existing heading :
Tracings on linen of the following drawings.
The Committee considered the letter from Messrs. Mather & Platt, Ltd., and observe as
follows:-
16. Particulars of drive-Clause 3.
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The information to be furnished against Appendix "A" for item (d) of Clause 24 shall be
plotted against train speed with 20" and 24" axle pulleys when driving dynamos fitted with
pulleys in accordance with Clause 13.
17. Yoke and Suspension Boss-Clause 10.
Where dynamos are of fabricated construction they may be provided with a fabricated boss
provided that this is fitted with a renewable bush continuous throughout its length.
18. Safely Chains-Clause 11.
Delete the third sentence "The extent by notice of the Purchaser" and add the following
sentence at the end of the clause:-
"Should the manufacturers be unable to comply with the conditions expressed in the
preceding sentences, the extent by which the Dynamoswill infringe moving dimensions,
when freely suspended on safety chains shall be brought to the notice of the Purchaser."
Subject 5.-Alkaline Batteries for Train Lighting-To consider' the suggestions of the Chief
Electrical Engineer, North Western Railway, in his D.O. letter No. TL/15/13-III, dated the
13th December 1937 to Mr. Mathur of the Indian Stores Department in regard to the
maintenance of alkaline batteries and reduced electrolyte costs.
Reference:-E.S. C. Report No.3, Subject No.6.
Recommendation and decision:
19. This subject was discussed at the 11th
Meeting of the Electrical Section I.R.C.A held in
July 1938, and after discussion, the Committee endorse the action proposed at that
meeting.
Subject 6.- Train Lighting Belting for Railways.
(a)To note that a reply from the British Standards Institution regarding tolerances for
thickness of belts is still awaited by the Central Standards Office.
(b) To consider the inclusion of "Flying Scotsman" Belts in the approved list of Train
Lighting Belts for Indian State Railways.
(c) Standardization of Train Lighting belt fasteners.
Reference:-E.S. C. Report No.3, Subject No.4.
Recommendation and decision:
20. With regard to (a), the Committee recommend that the draft Specification forwarded
by the Chief Electrical Engineer, North Western Railway and considered under Subject
No. 20 at the Second Meeting (1936) of the Electrical Standards Committee be circulated
to railways and manufacturers for comments.
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21. Regarding (b), the Committee endorse the recommendations of the Electrical Section
of the I. R. C. A., held in July 1938, Subject E 174 viz., that the under-mentioned belts may
be included in the approved list
Belts. Manufacturers. Suppliers.
Localite Messrs. Barrow, Hepburn
and Gale, Ltd.
Messrs. Turner, Hoare & Co.,
Ltd.
Flying
Scotsman
Messrs. Richard Lloyd & Co. Messrs. Birkmyre Bros.
Mercury Messrs. Fleming Birkbv &
Goodall.
Messrs. Fleming Birkbv &
Goodall
22. Regarding (c), the Committee considered the proposal of the North
Western Railway that Walker type belt fasteners should be standardized for use on train
lighting equipment and are of opinion that as the recommendations of the
I. R. C. A. Electrical Section Meeting No.6, Resolution No. E/91, were accepted by the
Indian Railway Conference Association at their Thirtieth Conference, the Walker type belt
fasteners may be accepted as standard and the Committee accept the modifications shown
on North Western Railway Drawing No. 917/TL.
Subject 7.- Amplilux Prismatic Rings-To consider the resultsof trial carried out by the Dy.
Chief Mechanical Engineer (Electrical), E. B. Railway.
Reference-
E. S. C. Report No.3, Subject No. 13.
Recommendation and decision:
23. The reports of E. B. and G. I. P. Railways on Amplilux Prismatic Rings have been
noted.
Subject 8.- Programme for production of Specifications for electrical equipment.
Recommendation and decision:
24. The Committee recommend that Specifications for the following electrical equipments
be prepared. Items grouped under head ‘A’ below may be taken up first for standardization
in the order given, and the item under group ‘C’ may be deferred for the present :-
‘A’
(1) Lightning Arresters up to 650 volts, A.C. and D. C.
(2) Refrigerators, electrically operated, domestic type, for use in coaching stock.
(3) Static condensers for power factor correction.
(4) Fire extinguishers for electrical purposes.
(5) Flood light projectors for lighting of railway yards.
(6) Push button operated starting and control gear for A.C. motors up to650 volts.
(7) Push button operated starting and control gear for D. C. motors up to 650 volts'C'.
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(1) Weatherproof cables for outdoor use.
Subject 9.- To note the view of the Loco. Standards Committee that silvered glass
headlight reflectors should be adopted as standard in place of chromium plated reflectors,
and to consider whether the specification for locomotive headlights should be modified in
the light of results of tests with reflectors carried out by the E. I. Railway.
Reference: -
E S C. Report No.3, Subject No.2, Item No.4.
Recommendation and decision:
25. The Committee recommend that I. R. S. Specification No E 9-37, Clause 3, sub-para.
3should be amended to read as follows:-
“The reflector shall be silvered glass, or chromium plate on sheet copper, or silver plate on
sheet copper. It shall be suitably housed within the casing to ensure a perfectly true
seating."
Subject 10.-Electrical Wiring for Locos and Tenders.
(a) To consider N. W. Railway's proposal to standardize the system.
(b) To consider the Consulting Engineers revised draft I. S. R. Standard Specification for
Locomotive Engines and Tenders as far as Lighting Equipment is concerned.
Recommendation and decision:
26. With regard to (a), the Committee consider that the standardization of the layout of
conduit for wiring on locomotives is unnecessary,
27. Regarding (b), the Committee recommend that the Consulting Engineers' revised draft
I. S. R Standard Specification for Locomotive Engines and Tenders (in so far as Lighting
Equipment is concerned), modified as shown in Appendix VI (Page 60) be accepted for
incorporation in I. R S. Specification No. E 9-37.
28. As there is divergence in the practice adopted on various railways, the Committee
further recommend that I. R S. Specification No. E 9-37, modified as above, be submitted
to the Loco. Standards Committee at their next meeting for confirmation that it meets their
requirements, particularly as regards Clauses 5 and 6.
Subject 11.- To consider extracts from Minutes of the Meeting between the representatives
of the State-worked Railways, Central Standards Office and the Indian Stores Department
held in the office of the Chief Controller of Stores, on the 29th November 1937 and the
extent to which demands for lubricants for Electrical Departments could be brought into
line with those of the Mechanical Departments with respect to description and cost.
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Recommendation and decision:
The Committee recommend :-
29. That the demands for lubricant" for Electrical Departments could bebrought into line
with those of the Mechanical Departments in cases where the lubricants are required for
plant of a similar nature.
30. That before attending the meeting of State-worked Railway; CentralStandard Office
and the Indian Stores Department, the representative of the railway should consult the
Electrical Department of his railway to ensure that their special requirements receive due
consideration.
Subject 12.-To consider the G.I.P. design of tail light for application to the inter vehicle
coupler as shown on sketch No. 3719 accompanying the 18th Carriage and Wagon
Standards Committee Report.
31. The G. 1. P. Railway design of taillight for application to the inter vehicle coupler is
considered suitable for adoption by railways.
Recommendation and decision:
Subject 13.-(a)15-way junction box-To record C. S. E. Drawing No. 23 relating to 15-
way junction box approved vide para. 102 of the 20th Carriage and Wagon Standards
Committee Report.
(b)24-way junction and fuse box-To record sketch No. 3806 approved vide para. 101 of
the 20th Carriage and Wagon Standards Committee Report.
Reference:-E. S. C. Report No.3, Subject No. 16.
Recommendation and decision:
32. (a)-Recorded.
33. (b)-The adoption of the arrangement for fixing the 24-way j